By looking at tree tintinnabulation , scientist have discovered grounds of a powerful and mysterious solar outcome that happened in 5480 BCE .
An international coaction measured the tier of a atomic number 6 isotope , make love as Carbon-14 ( 14C ) , in tree anchor ring , which is produce by cosmic ray of light collide with the high layer of the atmosphere . In a paper published in theProceedings of the National Academy of Sciences , the researchers see a stiletto heel in14C about 7,000 years ago .
Carbon-14 has the same chemical substance properties as C , but it ’s more or less heavier because it has two more neutrons than the standard class . It enroll the carbon cycle through trees and plants that absorb it from the air , and it is often used to escort archeological finding .
“ We assess the14C degree in the pine sample at three different research lab in Japan , the US , and Switzerland , to ensure the reliability of our termination , ” A. J. Timothy Jull of the University of Arizona said in astatement . “ We found a change in14C that was more abrupt than any found previously , except for cosmic ray events in AD 775 and AD 994 , and our purpose of yearly data point rather than data point for each decade allowed us to pinpoint on the button when this take place . ”
It is not wanton to work out what the crusade is behind the spindle , although we know it is related to the specialty of the Sun ’s activity .
" We think that a alteration in the magnetic natural action of the Sun along with a series of strong solar bursts , or a very rickety Sun , may have get the strange tree ring data , " leave writer Fusa Miyake of Nagoya University add together .
When the Sun is very combat-ready , it might generate strong geomagnetic storms , with a torrent of high - vim particles give Earth . A very sapless Sun alsoaffects Earth – our magnetosphere shrink and cosmic ray can reach the air more easily .
" Although this newly get word event is more dramatic than others found to date , compare of the14C data among them can help us to make for out what chance to the Sun at this fourth dimension , " Miyake say .
There are no detailed descriptions of what the Sun was doing seven millenary ago , so the team hopes that astronomic observations might ply clues to better understand the cause of the spike . Sun - like stars elsewhere might be conk out through similar cycles .
